EP0088850A1 - Device for introducing a gas into a liquid and use of the said device - Google Patents

Device for introducing a gas into a liquid and use of the said device Download PDF

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Publication number
EP0088850A1
EP0088850A1 EP82400453A EP82400453A EP0088850A1 EP 0088850 A1 EP0088850 A1 EP 0088850A1 EP 82400453 A EP82400453 A EP 82400453A EP 82400453 A EP82400453 A EP 82400453A EP 0088850 A1 EP0088850 A1 EP 0088850A1
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EP
European Patent Office
Prior art keywords
turbine
bowl
sludge
gas
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82400453A
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German (de)
French (fr)
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EP0088850B1 (en
Inventor
Jean-Louis Roland
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Individual
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Individual
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Filing date
Publication date
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Priority to DE8282400453T priority Critical patent/DE3271980D1/en
Priority to AT82400453T priority patent/ATE20703T1/en
Priority to EP19820400453 priority patent/EP0088850B1/en
Publication of EP0088850A1 publication Critical patent/EP0088850A1/en
Application granted granted Critical
Publication of EP0088850B1 publication Critical patent/EP0088850B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7181—Feed mechanisms characterised by the means for feeding the components to the mixer using fans or turbines
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23312—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a conduit surrounding the stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23363—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced above the stirrer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/711—Feed mechanisms for feeding a mixture of components, i.e. solids in liquid, solids in a gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/712—Feed mechanisms for feeding fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the present invention relates to a device of the type described in French patent n ° 74 39779, intended to introduce a gas into a static or moving liquid mass, in order to produce the solution in this liquid.
  • such a device is characterized in that it comprises: a drive motor, a wind box, a gas intake pipe, and a radial diffusion turbine coupled to a stirring turbine, these two turbines being immersed in the liquid mass.
  • the present invention relates to a device as specified in the prior patent mentioned above applied, on the one hand to the suspension of sludge which settles in the bottom of an aerated degreaser, or, in the case of a unit biological purification, the recovery of floats as well as the recirculation of activated sludge from the settling tank to the aeration tank, and, on the other hand, the introduction of air into fixed industrial aquariums or in tanks for transporting live fish, especially on trucks.
  • a cylindrical shaft is positioned under this turbine, in the extension of its axis, which is positioned in said bowl along the axis of the latter, this cylindrical shaft ensuring the guidance of the vortex created in the bowl. by said turbine.
  • one or more telescopic chimneys are provided in the settling tank and / or in the aeration tank, the lower orifices of these chimneys communicating with the lower part of said pipe, and the upper orifices being funnel-shaped.
  • the invention further relates to the application of the device which is the subject of the patent mentioned above, to the introduction of air into fixed industrial aquariums and into tanks for transporting live fish, on trucks.
  • the device is characterized in that the motor driving the stirring turbine and the radial diffusion turbine is placed at the bottom so as to be always submerged, in that the air intake is located in the axis of the device, and in that it comprises seals lubricated with water.
  • FIG. 1 there is shown a device for the introduction of a gas within a liquid mass, as in accordance with the patent mentioned above.
  • the electric drive motor driving the shaft 12 on which the radial turbine 20 and the stirring turbine are stalled22
  • the air is supplied by the intake manifold 18, emerging from the wind box 16.
  • a bowl 24 in the form of a truncated cone whose large base, facing upwards, is located under this turbine 22, along its axis.
  • this bowl 24 opens a pipe 26, fixed to the lower part of the bowl.
  • This pipe 26 provides the connection between the settling basins (not shown) and the aeration basin, in which the device is immersed.
  • a shaft 28 has been placed, fixed under the turbine 22 and along its axis, this shaft having the function of guiding the hollow vortex or vortex, formed under the turbine, so that the tip bottom of this vortex remains stable in the center of the bowl, and the effect thus obtained is constant.
  • the invention provides telescopic chimneys (not shown) whose lower orifices communicate with the lower part of the pipe 26, and whose upper orifices are funnel-shaped.
  • the device according to this invention uses the vortex, or hollow vortex, which forms under the turbine 22 in the bowl 2 4 , and whose tip is oriented downward, and which causes suction to ensure pumping and recirculating the settled sludge from the settling tank to the aeration tank, in which the device is positioned.
  • the sludge is sucked from the end (not visible in the drawing) of the pipe 26, and / or the chimneys, towards the aerator.
  • the device according to the invention mounted in a degreaser, makes it possible to constantly raise the sludge which deposits, and to distribute it throughout the basin. It allows, therefore, avoid the accumulation of sludge in the bottom of the degreaser.
  • the installation may include a valve system which makes it possible to adjust the relative flow rate of the recirculation of the settled sludge and the recovery of the floating sludge.
  • FIG. 3 illustrates the application of the device according to the patent mentioned above to the introduction of air into fixed industrial aquariums and into tanks for transporting live fish on trucks.
  • 10 the submerged motor driving the mixing turbines 22' and radial 20 '.
  • the low power 10 'motor is placed under the turbines so that it is always submerged, which ensures cooling.
  • the aerator is provided with an air intake 18 ', placed along the axis of the device and opening into the wind box 16', above the radial turbine 20 '.
  • the device comprises a set of flanges which are mounted between spacers 32, which allows their spacing to be easily adjusted.
  • this device we use a water-cooled seal only. This avoids the use of a lubricant, and in particular oil, which eliminates any risk of pollution of the basin.
  • arrow f 2 in FIG. 3 the water sucked in from the sides of the device lubricates the seal before being discharged.
  • the device is placed on the bottom of the aquarium, and for this purpose, it is provided with a base 30.
  • it can be suspended by its air supply tube 18 ', and it is then immobilized using a collar attached to the upper part of the aquarium.
  • the turbine is, of course, protected so as not to injure the fish.
  • the motor operates on direct current at a voltage of 24 V, this in order to allow mounting of the device in tanks for transporting live fish on a truck, the device then being connected to the batteries of this truck.
  • a supply also has advantages for aerators intended for industrial aquariums: connected to a set of buffer batteries, the device according to the invention continues to operate in the event of a mains failure, and the risks resulting from a interruption of the air supply are thus eliminated.
  • the electrical cabinet containing the charger and the battery can also be equipped with a field rheostat, which allows, by varying the speed of the motor, to modify the air flow introduced into the aquarium.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Environmental Sciences (AREA)
  • Animal Husbandry (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

1. A device for introducing a gas into a liquid containing decanted sludges which are to be recirculated, of the type comprising a driving-motor (10), a wind-box (16), a gas intake pipe (18) and a radial diffusion turbine (20) coupled with a stirring turbine (22), both turbines being immersed in the liquid mass, characterized in that it comprises a vat (24) in the form of a frustum of cone the longer and simultaneously upper base of which is located under the stirring turbine (22), coaxially to the latter, and a pipe (26) opening in said lower part of the vat closely above the shorter base of said vat and conveying the sludges which are to be re-circulated, for tangentially feeding said vat in the direction of rotation of the turbine.

Description

La présente invention est relative à un dispositif du type décrit dans le brevet français n° 74 39779, destiné à introduire un gaz au sein d'une masse liquide statique ou en mouvement, afin d'en réaliser la solution dans ce liquide.The present invention relates to a device of the type described in French patent n ° 74 39779, intended to introduce a gas into a static or moving liquid mass, in order to produce the solution in this liquid.

Selon ce brevet antérieur, un tel dispositif est caractérisé en ce qu'il comprend : un moteur d'entraînement, une boîte à vent, une tubulure de prise de gaz, et une turbine de diffusion radiale accouplée à une turbine de brassage, ces deux turbines étant immergées dans la masse liquide.According to this prior patent, such a device is characterized in that it comprises: a drive motor, a wind box, a gas intake pipe, and a radial diffusion turbine coupled to a stirring turbine, these two turbines being immersed in the liquid mass.

La présente invention vise un dispositif tel que spécifié dans le brevet antérieur mentionné ci-dessus appliqué, d'une part à la mise en suspension des boues qui décantent dans le fond d'un dégraisseur aéré, ou, dans le cas d'une unité d'épuration biologique, à la reprise des flottants ainsi qu'à la recirculation des boues activées du bassin de décantation au bassin d'aération, et, d'autre part, à l'introduction de l'air dans des aquariums industriels fixes ou dans des cuves de transport de poissons vivants, sur camions notamment.The present invention relates to a device as specified in the prior patent mentioned above applied, on the one hand to the suspension of sludge which settles in the bottom of an aerated degreaser, or, in the case of a unit biological purification, the recovery of floats as well as the recirculation of activated sludge from the settling tank to the aeration tank, and, on the other hand, the introduction of air into fixed industrial aquariums or in tanks for transporting live fish, especially on trucks.

On sait que la mise en suspension des boues qui décantent dans le fond d'un dégraisseur est souvent difficile à effectuer. La même difficulté se présente pour les boues qui flottent dans les bassins d'aération ou de décantation des unités de traitement biologique. La recirculation des boues décantées du bassin de décantation au bassin d'aération nécessite une pompe, même pour un faible débit. Cette invention se propose d'assurer cette recirculation sans utiliser de pompe.We know that the suspension of sludge settling in the bottom of a degreaser is often difficult to carry out. The same difficulty arises for the sludge that floats in the aeration or settling tanks of the biological treatment units. The recirculation of the settled sludge from the settling tank to the aeration tank requires a pump, even for a low flow rate. This invention proposes to ensure this recirculation without using a pump.

A cet effet, l'invention vise un dispositif empêchant la décantation des boues dans le fond des dégraisseurs aérés et le départ avec l'effluent épuré des flottants, et assurant la recirculation des boues activées du bassin de décantation au bassin d'aération, en permettant une reprise en continu, durant tout le temps où fonctionne le dispositif objet du brevet antérieur, des boues décantées et des flottants, ce dispositif étant caractérisé en ce qu'il comprend :

  • a - une cuvette tronconique dont la grande base, tournée vers le haut, est placée sous la turbine de brassage et dans l'axe de cette dernière ; et
  • b - une conduite débouchant dans ladite cuvette à sa partie inférieure, immédiatement au-dessus de sa petite base, et amenant les boues à recirculer afin d'alimenter ladite cuvette tangentiellement, dans le sens de rotation de la turbine.
To this end, the invention relates to a device preventing the settling of sludge in the bottom of aerated degreasers and the departure with the purified effluent of the floats, and ensuring the recirculation of activated sludge from the settling tank to the aeration tank, allowing continuous recovery, during the entire time when the device which is the subject of the previous patent, of the decanted sludge and the floats, this device being characterized in that it comprises:
  • a - a frustoconical bowl whose large base, facing upwards, is placed under the brewing turbine and in the axis of the latter; and
  • b - a pipe opening into said bowl at its lower part, immediately above its small base, and causing the sludge to recirculate in order to feed said bowl tangentially, in the direction of rotation of the turbine.

Selon une autre caractéristique de cette invention, on fixe sous cette turbine, dans le prolongement de son axe, un arbre cylindrique venant se positionner dans ladite cuvette selon l'axe de cette dernière, cet arbre cylindrique assurant le guidage du vortex créé dans la cuvette par ladite turbine.According to another characteristic of this invention, a cylindrical shaft is positioned under this turbine, in the extension of its axis, which is positioned in said bowl along the axis of the latter, this cylindrical shaft ensuring the guidance of the vortex created in the bowl. by said turbine.

Selon encore une autre caractéristique de cette invention, on prévoit une ou plusieurs cheminées télescopiques dans le bassin de décantation et/ou dans le bassin d'aération, les orifices inférieurs de ces cheminées communiquant avec la partie basse de ladite conduite, et les orifices supérieurs étant en forme d'entonnoir.According to yet another characteristic of this invention, one or more telescopic chimneys are provided in the settling tank and / or in the aeration tank, the lower orifices of these chimneys communicating with the lower part of said pipe, and the upper orifices being funnel-shaped.

L'invention vise en outre l'application du dispositif objet du brevet mentionné ci-dessus, à l'introduction de l'air dans des aquariums industriels fixes et dans des cuves de transport de poissons vivants, sur camions.The invention further relates to the application of the device which is the subject of the patent mentioned above, to the introduction of air into fixed industrial aquariums and into tanks for transporting live fish, on trucks.

Selon cette invention, le dispositif est caractérisé en ce que le moteur entraînant la turbine de brassage et la turbine de diffusion radiale est placé à la partie inférieure de façon à être toujours immergé, en ce que la prise d'air est située dans l'axe du dispositif, et en ce qu'il comporte des joints d'étanchéité lubrifiés à l'eau.According to this invention, the device is characterized in that the motor driving the stirring turbine and the radial diffusion turbine is placed at the bottom so as to be always submerged, in that the air intake is located in the axis of the device, and in that it comprises seals lubricated with water.

D'autres caractéristiques et avantages de cette invention ressortiront de la description faite ci-après en référence aux dessins annexés, qui en illustrent divers exemples de réalisation dépourvus de tout caractère limitatif. Sur les dessins :

  • - la figure 1 est une vue en élévation et coupe partielle d'un dispositif selon l'invention pour assurer la recirculation des boues ;
  • - la figure 2 est une vue similaire à la figure 1, montrant l'arbre cylindrique assurant le guidage du vortex ;
  • - la figure 3 est une vue en élévation et coupe partielle du dispositif selon l'invention pour introduire de l'air dans des aquariums.
Other characteristics and advantages of this invention will emerge from the description given below with reference to the appended drawings, which illustrate various embodiments thereof which are in no way limiting. In the drawings:
  • - Figure 1 is an elevational view in partial section of a device according to the invention for recirculating sludge;
  • - Figure 2 is a view similar to Figure 1, showing the cylindrical shaft for guiding the vortex;
  • - Figure 3 is an elevational view in partial section of the device according to the invention for introducing air into aquariums.

On se réfère en premier lieu aux figures 1 et 2. Sur ces figures, on a représenté un dispositif pour l'introduction d'un gaz au sein d'une masse liquide, tel que conforme au brevet mentionné ci-dessus. On voit en 10, le moteur d'entraînement électrique, entraînant l'arbre 12 sur lequel sont calées la turbine radiale 20 et la turbine de brassage22 L'alimentation en air s'effectue par la tubulure d'admission 18, débouchant de la boite à vent 16.Referring first to Figures 1 and 2. In these figures, there is shown a device for the introduction of a gas within a liquid mass, as in accordance with the patent mentioned above. We see at 10, the electric drive motor, driving the shaft 12 on which the radial turbine 20 and the stirring turbine are stalled22 The air is supplied by the intake manifold 18, emerging from the wind box 16.

Selon l'invention, on dispose sous la turbine de brassage 22 une cuvette 24 en forme de tronc de cône dont la grande base, tournée vers le haut, est située sous cette turbine 22, selon son axe. Dans cette cuvette 24 débouche une conduite 26, fixée à la partie inférieure de la cuvette. Cette conduite 26 assure la liaison entre le bassines décantation (non représenté) et le bassin d'aération, dans lequel est immergé le dispositif.According to the invention, there is disposed under the stirring turbine 22 a bowl 24 in the form of a truncated cone whose large base, facing upwards, is located under this turbine 22, along its axis. In this bowl 24 opens a pipe 26, fixed to the lower part of the bowl. This pipe 26 provides the connection between the settling basins (not shown) and the aeration basin, in which the device is immersed.

Dans l'exemple de réalisation représenté, on a disposé un arbre 28, fixé sous la turbine 22 et selon son axe, cet arbre ayant pour fonction d'assurer le guidage du tourbillon creux ou vortex, formé sous la turbine, pour que la pointe inférieure de ce vortex reste stable dans le centre de la cuvette, et que l'effet ainsi obtenu soit constant.In the embodiment shown, a shaft 28 has been placed, fixed under the turbine 22 and along its axis, this shaft having the function of guiding the hollow vortex or vortex, formed under the turbine, so that the tip bottom of this vortex remains stable in the center of the bowl, and the effect thus obtained is constant.

Enfin, l'invention prévoit des cheminées télescopiques (non représentées) dont les orifices inférieurs communiquent avec la partie basse de la conduite 26, et dont les orifices supérieurs sont en forme d'entonnoir.Finally, the invention provides telescopic chimneys (not shown) whose lower orifices communicate with the lower part of the pipe 26, and whose upper orifices are funnel-shaped.

Comme on le comprend, le dispositif selon cette invention utilise le vortex, ou tourbillon creux, qui se forme sous la turbine 22 dans la cuvette 24, et dont la pointe est orientée vers le bas, et qui provoque une aspiration pour assurer le pompage et la recirculation des boues décantées depuis le bassin de décantation jusqu'au bassin d'aération, dans lequel est positionné le dispositif. Les boues sont aspirées à partir de l'extrémité (non visible sur le dessin) de la conduite 26, et/ou des cheminées, vers l'aérateur.As will be understood, the device according to this invention uses the vortex, or hollow vortex, which forms under the turbine 22 in the bowl 2 4 , and whose tip is oriented downward, and which causes suction to ensure pumping and recirculating the settled sludge from the settling tank to the aeration tank, in which the device is positioned. The sludge is sucked from the end (not visible in the drawing) of the pipe 26, and / or the chimneys, towards the aerator.

Le dispositif selon l'invention, monté dans un dégraisseur, permet de remonter constamment les boues qui se déposent, et de les répartir dans l'ensemble du bassin. Il permet, en conséquence, d'éviter l'accumulation de boues dans le fond du dégraisseur.The device according to the invention, mounted in a degreaser, makes it possible to constantly raise the sludge which deposits, and to distribute it throughout the basin. It allows, therefore, avoid the accumulation of sludge in the bottom of the degreaser.

Ce même dispositif permet, comme on vient de le voir, de recirculer les boues du bassin de décantation vers le bassin d'aération sans installer de pompe. Pour une telle application, la conduite 26, alimentant la cuvette 24, traverse la ou les parois séparant les bassins de décantation et d'aération, et son extrémité libre repose sur le fond du bassin de décantation. Les cheminées télescopiques prévues sur la conduite, dans le bassin de décantation et/ou dans le bassin d'aération, ramènent les boues qui flottent vers le centre du bassin d'aération. Ces cheminéés lorsqu'elles sont relevées, sont inactives, et abaissées elles assurent l'aspiration des flottants vers l'aérateur. On peut d'ailleurs obtenir le même effet en faisant varier le niveau du plan d'eau. Enfin, l'installation peut comprendre un système de vannes qui permet de régler le débit relatif de la recirculation des boues décantées et de la reprise des boues flottantes.This same device allows, as we have just seen, to recirculate the sludge from the settling tank to the aeration tank without installing a pump. For such an application, the pipe 26, supplying the bowl 24, crosses the wall or walls separating the settling and aeration tanks, and its free end rests on the bottom of the settling tank. The telescopic chimneys provided on the pipe, in the settling tank and / or in the aeration tank, bring the sludge which floats towards the center of the aeration tank. These chimneys when they are raised, are inactive, and lowered they ensure the suction of the floats towards the aerator. We can also obtain the same effect by varying the level of the water. Finally, the installation may include a valve system which makes it possible to adjust the relative flow rate of the recirculation of the settled sludge and the recovery of the floating sludge.

La figure 3 illustre l'application du dispositif selon le brevet mentionné ci-dessus à l'introduction d'air dans des aquariums industriels fixes et dans des cuves de transport de poissons vivants sur camions. On reconnait, en 10' le moteur immergé entraînant les turbines de brassage 22' et radiale 20'. Le moteur 10', de faible puissance, est placé sous les turbines de façon à être toujours immergé, ce qui permet d'en assurer le refroidissement. L'aérateur est pourvu d'une prise d'air 18', placée selon l'axe du dispositif et débouchant dans la boite à vent 16', au-dessus de la turbine radiale 20'.FIG. 3 illustrates the application of the device according to the patent mentioned above to the introduction of air into fixed industrial aquariums and into tanks for transporting live fish on trucks. We recognize, in 10 'the submerged motor driving the mixing turbines 22' and radial 20 '. The low power 10 'motor is placed under the turbines so that it is always submerged, which ensures cooling. The aerator is provided with an air intake 18 ', placed along the axis of the device and opening into the wind box 16', above the radial turbine 20 '.

Le dispositif comporte un jeu de flasques qui sont montés entre des entretoises 32, ce qui permet de régler facilement leur écartement. Dans ce dispositif on utilise un joint d'étanchéité uniquement refroidi par eau. On évite ainsi l'emploi d'un lubrifiant, et notamment d'huile, ce qui élimine tout risque de pollution du bassin. Comme le montre la flèche f2 sur la figure 3, l'eau aspirée par les côtés du dispositif lubrifie le joint avant d'être rejetée.The device comprises a set of flanges which are mounted between spacers 32, which allows their spacing to be easily adjusted. In this device we use a water-cooled seal only. This avoids the use of a lubricant, and in particular oil, which eliminates any risk of pollution of the basin. As shown by arrow f 2 in FIG. 3, the water sucked in from the sides of the device lubricates the seal before being discharged.

Dans l'exemple de réalisation représenté, le dispositif est posé sur le fond de l'aquarium, et à cet effet, il est pourvu d'un socle 30. En variante, il peut être suspendu par son tube d'alimentation en air 18', et il est alors immobilisé à l'aide d'un collier fixé à la partie supérieure de l'aquarium. La turbine est, bien entendu, protégée afin de ne pas blesser les poissons.In the embodiment shown, the device is placed on the bottom of the aquarium, and for this purpose, it is provided with a base 30. As a variant, it can be suspended by its air supply tube 18 ', and it is then immobilized using a collar attached to the upper part of the aquarium. The turbine is, of course, protected so as not to injure the fish.

De préférence, le moteur fonctionne en courant continu sous une tension de 24 V, ceci afin de permettre un montage du dispositif dans des cuves de transport de poissons vivants sur camion, le dispositif étant alors branché sur les batteries de ce camion. Par ailleurs, une telle alimentation présente également des avantages, pour des aérateurs destinés à des aquariums industriels : branché sur un jeu de batteries tampon, le dispositif selon l'invention continue à fonctionner en cas de panne de secteur, et les risques consécutifs à une interruption de l'alimentation en air sont ainsi éliminés.Preferably, the motor operates on direct current at a voltage of 24 V, this in order to allow mounting of the device in tanks for transporting live fish on a truck, the device then being connected to the batteries of this truck. Furthermore, such a supply also has advantages for aerators intended for industrial aquariums: connected to a set of buffer batteries, the device according to the invention continues to operate in the event of a mains failure, and the risks resulting from a interruption of the air supply are thus eliminated.

L'armoire électrique qui contient le chargeur et la batterie peut aussi être équipée d'un rhéostat de champ, qui permet, en faisant varier la vitesse du moteur, de modifier le débit d'air introduit dans l'aquarium.The electrical cabinet containing the charger and the battery can also be equipped with a field rheostat, which allows, by varying the speed of the motor, to modify the air flow introduced into the aquarium.

Enfin, on peut prévoir une sonde à oxygène reliée à un microprocesseur permettant un étalonnage maxi-mini de l'oxygène dissous dans la cuve, et une alarme sonore ou optique se déclenchant lorsque l'oxygène dissous descend au-dessous du niveau minimal sans que la turbine ne se remette à fonctionner.Finally, we can provide an oxygen sensor connected to a microprocessor allowing a maxi-mini calibration of the oxygen dissolved in the tank, and an audible or optical alarm triggered when the dissolved oxygen drops below the minimum level without the turbine does not start working again.

Claims (8)

1. Dispositif pour introduire un gaz dans un liquide du type qui comprend un moteur d'entraînement (10), une boite à vent (16), une tubulure de prise de gaz (18) et une turbine de diffusion radiale (20) accouplée à une turbine de brassage (22), ces deux turbines étant immergées dans la masse liquide, ce dispositif étant appliqué à la prévention de la décantation des boues dans le fond des dégraisseurs aérés et du départ avec l'effluent épuré des flottants, ainsi qu'à la recirculation des boues activées du bassin de décantation au bassin d'aération, en permettant une reprise en continu, durant tout le temps où fonctionne le dispositif, des boues décantées et des flottants, ce dispositif étant caractérisé en ce qu'il comprend : une cuvette (24) de forme tronconique dont la grande base, tournée vers le haut, est placée sous la turbine de brassage (22), et dans l'axe de cette dernière, et une conduite (26) débouchant dans ladite cuvette à sa partie inférieure, immédiatement au-dessus de sa petite base, et amenant les boues à recirculer afin d'alimenter ladite cuvette tangentiellement, dans le sens de rotation de la turbine.1. Device for introducing a gas into a liquid of the type which comprises a drive motor (10), a wind box (16), a gas intake pipe (18) and a coupled radial diffusion turbine (20) to a stirring turbine (22), these two turbines being immersed in the liquid mass, this device being applied to the prevention of the settling of sludge in the bottom of the aerated degreasers and of the departure with the purified effluent of the floats, as well as '' to the recirculation of the activated sludge from the settling tank to the aeration tank, by allowing a continuous recovery, during all the time when the device operates, of the decanted sludge and the floats, this device being characterized in that it comprises : a frustoconical bowl (24) whose large base, facing upwards, is placed under the brewing turbine (22), and in the axis of the latter, and a pipe (26) opening into said bowl its lower part, immediately above its small base, and causing the sludge to recirculate in order to feed said bowl tangentially, in the direction of rotation of the turbine. 2. Dispositif selon la revendication 1, caractérisé en ce que l'on fixe sous la turbine, dans le prolongement de son axe (12), un arbre cylindrique (28) venant se positionner dans ladite cuvette (24), selon l'axe de cette dernière, ledit arbre cylindrique assurant le guidage du tourbillon creux ou vortex créé dans la cuvette par la rotation de la turbine.2. Device according to claim 1, characterized in that one fixes under the turbine, in the extension of its axis (12), a cylindrical shaft (28) which is positioned in said bowl (24), along the axis of the latter, said cylindrical shaft guiding the hollow vortex or vortex created in the bowl by the rotation of the turbine. 3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce qu'on prévoit une ou plusieurs cheminées télés-copiques dans le bassin de décantation et/ou dans le bassin d'aération, dont les orifices inférieurs communiquent avec la partie basse de ladite conduite (26), et dont les orifices supérieurs sont en forme d'entonnoir.3. Device according to one of claims 1 or 2, characterized in that one or more remote-controlled chimneys are provided. copics in the settling tank and / or in the aeration tank, the lower orifices of which communicate with the lower part of the said pipe (26), and the upper orifices of which are funnel-shaped. 4. Dispositif destiné à introduire un gaz au sein d'une masse liquide statique ou en mouvement, en vue d'en réaliser la solution dans ce liquide, qui comprend : un moteur d'entraînement (10), une boite à vent (16), une tubulure de prise de gaz (18) et une turbine de diffusion radiale (20) accouplée à une turbine de brassage (22), ces deux turbines étant immergées dans la masse liquide, ce dispositif, appliqué à l'aération des aquariums industriels fixes et des cuves de transport de poissons vivants sur camions, étant caractérisé en ce que le moteur (10') entraînant la turbine de brassage (22') et la turbine de diffusion radiale (20') est placé à la partie inférieure de façon à être toujours immergé, en ce que la prise d'air (18') est située dans l'axe du dispositif, et en ce qu'il comporte des joints d'étanchéité lubrifiés à l'eau.4. Device intended to introduce a gas into a static or moving liquid mass, with a view to producing the solution in this liquid, which comprises: a drive motor (10), a wind box (16 ), a gas intake pipe (18) and a radial diffusion turbine (20) coupled to a stirring turbine (22), these two turbines being immersed in the liquid mass, this device, applied to the aeration of aquariums stationary industrial and tanks for transporting live fish on trucks, being characterized in that the motor (10 ') driving the mixing turbine (22') and the radial diffusion turbine (20 ') is placed at the bottom of so as to always be submerged, in that the air intake (18 ') is located in the axis of the device, and in that it comprises seals lubricated with water. 5. Dispositif selon la revendication 4, caractérisé en ce que le moteur (10') est alimenté en courant continu par les batteries du camion.5. Device according to claim 4, characterized in that the motor (10 ') is supplied with direct current by the batteries of the truck. 6. Dispositif selon l'une des revendications 4 ou 5, caractérisé en ce qu'il est pourvu d'un socle (30).6. Device according to one of claims 4 or 5, characterized in that it is provided with a base (30). 7. Dispositif selon l'une des revendications 4 ou 5, caractérisé en ce qu'il est suspendu par son tube de prise d'air (18'), un collier fixé en haut du bassin assurant son immobilisation.7. Device according to one of claims 4 or 5, characterized in that it is suspended by its air intake tube (18 '), a collar fixed at the top of the basin ensuring its immobilization. 8. Dispositif selon l'une quelconque des revendications 4 à 7, caractérisé en ce qu'il comporte une sonde à oxygène reliée à un microprocesseur permettant un étalonnage maxi-mini de l'oxygène dissous dans la cuve, et une alarme se déclenchant lorsque l'oxygène dissous descent en-dessous du niveau minimal sans que la turbine se remette à fonctionner.8. Device according to any one of claims 4 to 7, characterized in that it comprises an oxygen sensor connected to a microprocessor allowing maximum calibration minimum of dissolved oxygen in the tank, and an alarm is triggered when the dissolved oxygen decreases below the minimum level without the turbine restarting.
EP19820400453 1982-03-12 1982-03-12 Device for introducing a gas into a liquid and use of the said device Expired EP0088850B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8282400453T DE3271980D1 (en) 1982-03-12 1982-03-12 Device for introducing a gas into a liquid and use of the said device
AT82400453T ATE20703T1 (en) 1982-03-12 1982-03-12 DEVICE FOR GASING A LIQUID AND USE OF SUCH DEVICE.
EP19820400453 EP0088850B1 (en) 1982-03-12 1982-03-12 Device for introducing a gas into a liquid and use of the said device

Applications Claiming Priority (1)

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EP19820400453 EP0088850B1 (en) 1982-03-12 1982-03-12 Device for introducing a gas into a liquid and use of the said device

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EP0088850A1 true EP0088850A1 (en) 1983-09-21
EP0088850B1 EP0088850B1 (en) 1986-07-16

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DE (1) DE3271980D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562314A1 (en) * 1992-03-23 1993-09-29 Silvano Becchi Water treatment equipment
EP0941659A2 (en) 1998-03-09 1999-09-15 Silvano Becchi Device for treating waters in a basin
FR2820653A1 (en) * 2001-02-14 2002-08-16 Georges Ponthieu DEVICE FOR DIFFUSING A GAS IN A LIQUID THROUGH A FINED TURBINE
US6761215B2 (en) * 2002-09-06 2004-07-13 James Eric Morrison Downhole separator and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105432534A (en) * 2014-09-11 2016-03-30 李福海 Floating type aerating and feeding dual-purpose machine

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FR2024477A1 (en) * 1968-11-29 1970-08-28 Fmc Corp
US3800462A (en) * 1973-08-03 1974-04-02 C Coyle Live-well aerator
DE2546429A1 (en) * 1974-10-17 1976-04-29 Union Carbide Corp METHOD AND DEVICE FOR CONTROLLING THE LIQUID LEVEL AND ENERGY CONSUMPTION IN LIQUID TREATMENT FACILITIES
FR2293235A1 (en) * 1974-12-05 1976-07-02 Roland Jean Louis Mixing gas into a liquid - using rotating compound agitator with turbine and vaned sections
DE2149047B2 (en) * 1971-09-06 1976-07-15 Kaelin, Joseph Richard, Buochs (Schweiz) SURFACE VENTILATOR FOR STANDING WATERS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2024477A1 (en) * 1968-11-29 1970-08-28 Fmc Corp
DE2149047B2 (en) * 1971-09-06 1976-07-15 Kaelin, Joseph Richard, Buochs (Schweiz) SURFACE VENTILATOR FOR STANDING WATERS
US3800462A (en) * 1973-08-03 1974-04-02 C Coyle Live-well aerator
DE2546429A1 (en) * 1974-10-17 1976-04-29 Union Carbide Corp METHOD AND DEVICE FOR CONTROLLING THE LIQUID LEVEL AND ENERGY CONSUMPTION IN LIQUID TREATMENT FACILITIES
FR2293235A1 (en) * 1974-12-05 1976-07-02 Roland Jean Louis Mixing gas into a liquid - using rotating compound agitator with turbine and vaned sections

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562314A1 (en) * 1992-03-23 1993-09-29 Silvano Becchi Water treatment equipment
US5354457A (en) * 1992-03-23 1994-10-11 Silvano Becchi Water treatment equipment
EP0941659A2 (en) 1998-03-09 1999-09-15 Silvano Becchi Device for treating waters in a basin
FR2820653A1 (en) * 2001-02-14 2002-08-16 Georges Ponthieu DEVICE FOR DIFFUSING A GAS IN A LIQUID THROUGH A FINED TURBINE
EP1232784A1 (en) * 2001-02-14 2002-08-21 Georges Ponthieu Device for diffusing a gas in a liquid using a blade turbine
US6761215B2 (en) * 2002-09-06 2004-07-13 James Eric Morrison Downhole separator and method

Also Published As

Publication number Publication date
ATE20703T1 (en) 1986-08-15
EP0088850B1 (en) 1986-07-16
DE3271980D1 (en) 1986-08-21

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